Answer:
A system that uses the sun's energy without requiring mechanical devices (pumps or fans) to distribute the collected heat are called solar system while radiator system uses fuel to heat the water. in active solar heating system, the SUN's energy used to heat water.
Tsunami, I think, maybe a flood
Answer:
When populations are separated by a barrier forming a new species
Answer: False
Explanation: It occurs in plants
animals recieve energy from the photosynthesis/energy when they eat plants
